Multi-use personal ventilation/filtration system
US7892306B2 · kind B2 · utility
8Cited by
7References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2008 |
| Grant date | Feb 22, 2011 |
| Priority date | — |
| Expiry date | Jun 19, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D46/42
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A personal ventilation system uses a cross-flow fan and one or more filters, where the filter preferably has a cylindrical or elongated elliptical shape that at least partially surrounds the rotor of the cross-flow fan. The filters preferably remove particles, undesired gases, and micro-organisms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.